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灌木对三层填埋场覆盖系统一维吸力分布和水分入渗的影响（英文）

论文摘要

目的:研究灌木对干燥和湿润过程中三层土质覆盖系统的吸力分布的影响。创新点:发现对于三层土质覆盖系统,干燥过程中植物蒸腾作用不仅提高了土的吸力,同时也增加了土层之间的吸力梯度(图3)。方法:通过土柱试验模拟干燥和湿润过程,并测量吸力的变化。结论:1.植物蒸腾作用导致植有灌木的土在干燥过程中所产生的吸力较没有植物的土高60%～200%。2.植物蒸腾作用提高了植有灌木的土的持水能力;在湿润过程中水分穿透植有灌木的土所需时间比没有植物的土长50%(图3～4)。

论文目录

  • 1 Introduction
  • 2 Testing program and procedures
  • 3 Test results and discussion
  •   3.1 Effects of shrub on soil suction distribution during drying
  •   3.2 Effects of shrub on cumulative infiltrated water volume during wetting
  •   3.3 Effects of shrub on suction distribution during wetting and the effectiveness of landfill cover in preventing water percolation
  • 4 Conclusions

    • 文章来源

    类型: 期刊论文

    作者: Sandar LIN,Charles W.W.NG,Jie XU,Rui CHEN,Jian LIU,Zhong-kui CHEN,Chung Fai CHIU

    关键词: 灌木,填埋场覆盖系统,吸力,土柱试验

    来源: Journal of Zhejiang University-Science A（Applied Physics & Engineering） 2019年07期

    年度: 2019

    分类: 工程科技Ⅱ辑,工程科技Ⅰ辑

    专业: 环境科学与资源利用,建筑科学与工程

    单位: Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University,Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology,School of Civil and Environmental Engineering, Harbin Institute of Technology,Guangdong Engineering Center for Structure Safety and Health Monitoring, Shantou University

    基金: Project supported by the National Natural Science Foundation of China(Nos.51778166,51578196,and 51608152),the Environment and Conservation Fund Project(No.85,2018),Hong Kong,China

    分类号: TU993.3

    页码: 546-552

    总页数: 7

    文件大小: 818K

    下载量: 45

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